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Truly isotropic biaxial hysteresis with arbitrary knee sharpness
Author(s) -
Harvey P. Scott,
Gavin Henri P.
Publication year - 2014
Publication title -
earthquake engineering and structural dynamics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.218
H-Index - 127
eISSN - 1096-9845
pISSN - 0098-8847
DOI - 10.1002/eqe.2436
Subject(s) - hysteresis , isotropy , yield (engineering) , yield surface , smoothness , coupling (piping) , structural engineering , materials science , geotechnical engineering , geology , engineering , physics , mathematics , mathematical analysis , condensed matter physics , composite material , finite element method , optics , constitutive equation
The inelastic responses of framed structures and seismic isolation systems undergoing biaxial (horizontal) shaking are coupled. In existing models for biaxial coupling of hysteretic behavior, the smoothness (or ‘knee') of the transition from elastic to yielding behavior cannot be modified without affecting the shape of the yield surface. This paper presents a model for coupled biaxial hysteretic behavior in which the knee from pre‐yield to post‐yield can be adjusted while maintaining an isotropic yield surface. Copyright © 2014 John Wiley & Sons, Ltd.